Starting from 11th April 2014, passengers on THAI and THAI Smile flights can pre-purchase extra baggage allowance online no less than 24 hours prior to their departures. A maximum of 30 kg is allowed for extra allowance and applies to domestic and international flights departing from Bangkok except flight to Los Angeles. Payment is quoted in Thai Baht and can be made by using Visa/MasterCard both credit and debit cards.
How to Purchase Extra Baggage Allowance
*Extra Baggage Allowance is not available for Group, stand-by and infant passengers